# What is the dot product of <9,4,1> and <7,6,3 >?

$A . B = 9 \cdot 7 + 4 \cdot 6 + 1 \cdot 3 = 90$
$A . B = 9 \cdot 7 + 4 \cdot 6 + 1 \cdot 3 = 90$